Clamp Assembly Hinge Layout for Even Force and Pipe Sealing
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Solution Overview
Problem
Hinged pipe couplings experience uneven force distribution, leading to deformation and improper sealing due to heavier and thicker hinges, which are required to bear higher forces.
Innovation Solution
A multiple-degree-of-freedom hinge is integrated into the clamp assembly, allowing the clamp halves to rotate and translate, reducing weight and volume while maintaining high force-bearing capacity, and enabling easier installation on pipes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a hinged coupling is used to allow easy installation, then the coupling can be easily installed on pipes, but the forces become unevenly distributed causing deformation and improper sealing
Solution Approach 1:
The hinge is divided into multiple segments or degrees of freedom, allowing it to distribute forces across multiple pivot points rather than concentrating stress at a single hinge point. This segmentation enables the coupling to accommodate installation movements while maintaining uniform force distribution across the sealing surface.
Solution Approach 2:
The coupling transitions from a static rigid structure to a dynamic system with multiple degrees of freedom. The hinge allows controlled movements and rotations during installation, adapting to pipe misalignments and reducing stress concentrations that would otherwise compromise sealing precision.
2Strength
If a thicker hinge is used to bear higher forces, then the hinge can support higher loads, but the weight and volume of the hinge increase
Solution Approach 1:
By introducing multiple degrees of freedom and dynamic movement capabilities to the hinge, the structure can bear higher forces through mechanical advantage and force distribution rather than relying solely on increased thickness. The hinge utilizes controlled rotation and translation to dissipate and redistribute loads, maintaining strength while reducing material requirements.
Solution Approach 2:
The hinge design changes key geometric parameters such as the number and arrangement of pivot points, the configuration of rotating elements, and the distribution of structural thickness. These parameter changes optimize the strength-to-weight ratio by concentrating material where stresses are highest and reducing material in low-stress regions.
3Strength
If a thicker hinge is used to bear higher forces, then the hinge can support higher loads, but the volume of the hinge increases
Solution Approach 1:
The hinge is segmented into multiple functional elements that work together to bear loads. Instead of a single thick structure, the force-bearing capacity is achieved through distributed pivots, rotating joints, and strategic reinforcement at critical stress points, reducing overall volume while maintaining strength.
Solution Approach 2:
The design optimizes volume by changing geometric parameters including the number of degrees of freedom, the arrangement of pivot axes, and the thickness distribution across different regions of the hinge. These parameter changes create a compact structure that maintains high force-bearing capacity through efficient stress distribution rather than uniform thickness.
Data Source
AI summary
A clamp assembly includes two curved clamp halves terminating in two clamp members, one or more fasteners for fastening the clamp members towards each other so as to apply a radially-inward clamping force, and a multiple-degree-of-freedom hinge that couples the clamp halves to each other so that the clamp halves can translate and rotate with respect to each other.